[INFO] fetching crate pag-lexer 0.1.0-alpha.1...
[INFO] testing pag-lexer-0.1.0-alpha.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate pag-lexer 0.1.0-alpha.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate pag-lexer 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate pag-lexer 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate pag-lexer 0.1.0-alpha.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pag-lexer 0.1.0-alpha.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 327960d766754eee611e9c70f98b33b441266f04e5ebbeb62462d6292f67ebd6
[INFO] running `Command { std: "docker" "start" "-a" "327960d766754eee611e9c70f98b33b441266f04e5ebbeb62462d6292f67ebd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "327960d766754eee611e9c70f98b33b441266f04e5ebbeb62462d6292f67ebd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "327960d766754eee611e9c70f98b33b441266f04e5ebbeb62462d6292f67ebd6", kill_on_drop: false }`
[INFO] [stdout] 327960d766754eee611e9c70f98b33b441266f04e5ebbeb62462d6292f67ebd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43fc61810878bad891a592936c85da710a7aab00aaeeb0cc78dbdbb0ba0074b7
[INFO] running `Command { std: "docker" "start" "-a" "43fc61810878bad891a592936c85da710a7aab00aaeeb0cc78dbdbb0ba0074b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling pag-lexer v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/intervals.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let Some(x) = self.0.first() {
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/intervals.rs:127:16
[INFO] [stdout]     |
[INFO] [stdout] 127 |             if let Some(current) = current && current < i.0 {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/intervals.rs:192:20
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 if let Some(ix) = x &&
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/intervals.rs:196:27
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 } else if let Some(iy) = y &&
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/normalization.rs:53:16
[INFO] [stdout]    |
[INFO] [stdout] 53 |             if let RegexTree::Set(r) = r.as_ref()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/normalization.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 && let RegexTree::Set(s) = s.as_ref() {
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/normalization.rs:154:16
[INFO] [stdout]     |
[INFO] [stdout] 154 |             if let RegexTree::Set(r) = r.as_ref()
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/normalization.rs:155:20
[INFO] [stdout]     |
[INFO] [stdout] 155 |                 && let RegexTree::Set(s) = s.as_ref() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/normalization.rs:160:16
[INFO] [stdout]     |
[INFO] [stdout] 160 |             if let RegexTree::Concat(r1, r2) = r.as_ref() &&
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/normalization.rs:161:17
[INFO] [stdout]     |
[INFO] [stdout] 161 |                 let RegexTree::Concat(s1, s2) = s.as_ref() {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `array_chunks`
[INFO] [stdout]   --> src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(array_chunks)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pag-lexer` (lib) due to 11 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "43fc61810878bad891a592936c85da710a7aab00aaeeb0cc78dbdbb0ba0074b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43fc61810878bad891a592936c85da710a7aab00aaeeb0cc78dbdbb0ba0074b7", kill_on_drop: false }`
[INFO] [stdout] 43fc61810878bad891a592936c85da710a7aab00aaeeb0cc78dbdbb0ba0074b7